Answer: The number that should be put in the "green box" is: " 1 " .
____________________________________________________________
Note: (2/1 = "2" ).
We are looking for a "trend" ; not an "exact amount.
We look at the "4/3 x" ;
when " x = 3 " , "(4/3) * x " = "(4/3) * 3" = "4" ; (the "fraction" cancels out.
So, we have: "y = 4 + (what value?) ;
Look at the graph when "x = 4" ; The corresponding "y-value" is about "6" ;
So we have "y = 4 + (what value?)" ;
Try: y = 6; → "6 = 4 + (what value?) ;
The "(what value?) would be "2" ;
And that particular value given is: " 2/ [?]" ;
So; "2/(?) = 2 " ; ↔ 2* (?) = 2 ; → The [?] = " 1 " .
________________________________________________________